参数资料
型号: DS21448LDK
厂商: Maxim Integrated Products
文件页数: 30/60页
文件大小: 0K
描述: KIT DESIGN LIU DS21448L T1/J1/E1
标准包装: 1
DS21448 3.3V T1/E1/J1 Quad Line Interface
36 of 60
Figure 7-1. Basic Interface
NOTE 1: ALL RESISTOR VALUES ARE ±1%.
NOTE 2: IN E1 APPLICATIONS, THE RT RESISTORS ARE USED TO INCREASE THE TRANSMITTER RETURN LOSS
(Table 7-A). NO RETURN LOSS IS REQUIRED FOR T1 APPLICATIONS.
NOTE 3: THE RR RESISTORS SHOULD EACH BE SET TO 60
IF THE INTERNAL RECEIVE-SIDE TERMINATION FEATURE IS ENABLED. WHEN THIS
FEATURE IS DISABLED, RR = 37.5 FOR 75 OR 60 FOR 120 E1 SYSTEMS, OR 50 FOR 100 T1 LINES.
NOTE 4: SEE Table 7-A AND Table 7-B FOR THE APPROPRIATE TRANSMIT TRANSFORMER TURNS RATIO (N).
VDD
VSS
TTIP
TRING
RTIP
RRING
VDD
VSS
0.01
F
0.01
F
0.1
F
+
10
F
0.1
F
R
r
0.1
F
R
t
R
t
1.0
F
(NONPOLARIZED)
2:1
(LARGER WINDING
TOWARD THE NETWORK)
1:1
TRANSMIT LINE
RECEIVE LINE
MCLK
2.048MHz
(THIS CAN ALSO BE 1.544MHz
FOR T1 ONLY OPERATION)
68
F
R
r
Dallas
Semiconductor
DS21448
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相关代理商/技术参数
参数描述
DS21448LN 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Quad Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS21448LN+ 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Quad Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS21448-LW 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Quad Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS21448N 功能描述:网络控制器与处理器 IC 3.3V E1/T1/J1 Quad Interface RoHS:否 制造商:Micrel 产品:Controller Area Network (CAN) 收发器数量: 数据速率: 电源电流(最大值):595 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:PBGA-400 封装:Tray
DS2145 制造商:未知厂家 制造商全称:未知厂家 功能描述:Telecommunication IC